Calender device



D. B. GRANZOW, JR 2,846,877

Aug. 12, 1958 CALENDER DEVICE Filed Jilly 29, 1957 FIG. I

INVENTOR DANIEL a. GRANZOW JR.

44AM HI ATTORNEYS United States Patent CALENDER DEVICE Daniel B.Granzow, 112, Dayton, Ohio, assignor to The National Cash RegisterCompany, Dayton, Ohio, a corporation of Maryland Application July 29,1957, Serial No. 674,879

2 Claims. (Cl. 73--159) The invention relates to a manually operablecalender device.

The principal object of the invention is to provide a device for testingpressure-sensitive material.

Another object of the invention is to test pressuresenstive coating onrecord material.

With these and incidental objects in view, the invention includescertain novel features of construction and combinations of parts, apreferred form or embodiment of which is hereinafter described withreference to the drawings which accompany and form a part of thisspecification.

Of the drawings:

Fig. l is an edge view of the calender device.

Fig. 2 is a face view of the calender device.

Fig. 3 is a detail view of the calender device showing the position ofthe pressure rollers just before they exert pressure on the material tobe tested.

General description For best results, paper such as that produced by theprocess shown in U. S. patent to Green et al., No. 2,730,457 must attaina high degree of accuracy in dispersion of capsules on its surface. Asfully described in said patent, the coated record material comprisesoily liquid reactant substance encased in central nuclei inpressure-rupturable microscopic capsules of hardened film-forminghydrophilic colloid materials. Pressure impact of a marking instrumenton the surface of this novel record material locally releases the oilynuclei from the capsules and forces the oily liquid into contact withsolid reactant attapulgite particles.

The coated paper to be successful in use must attain a high degree ofaccuracy in the construction of the capsules and their dispersion on thesurface of paper.

The device illustrated herein comprises a means of testing such coatingsbefore placing them in use.

Detail description The device includes two calender rollers and 11,between which paper to be tested is placed. The roller 10 is rotatablymounted in a bracket 12, bifurcated to fit in a recess 13, and pivotedon a stud 14, carried in the recess 13. The amount of movement of theroller 10 "ice about the pivot stud 14 is determined by the walls of therecess 13, against which the bracket may rest, as illustrated in Fig. 3.The recess 13 is formed in a handle 15, pivoted to a second handle 16 bystud 17. The handle 16 has rigidly connected thereto a bracket 18,supporting the roller 11. Studs 19 and 20 maintain the bracket rigid onthe handle 16.

To use the device, paper 21 is placed between the rollers 10 and 11, andthe handles 15 and 16 are grasped to close the rollers tightly againstthe paper. To insure perfect alinement of the rollers 10 and 11 againsteach other so as to grip the paper uniformly throughout the length ofthe rollers, the roller 10 is pivoted, and in the beginning of theclosing operation, the roller 10 engages the roller 11 in the mannerillustrated in Fig. 3. Further closing of the handles bringsthe rollers10 and 11 together in the manner illustrated in Fig. 2. After the paperis firmly gripped between the rollers 10 and 11, the paper is pulledthrough the device, whereupon the rollers rotate and apply pressure tothe paper. The pressure is sufficient to crush the capsules on thesurface of the paper, and an impression is made. From the impressionmade, the operator can determine the quality of the coating on thepaper.

The invention is illustrated as a portable device. If desirable, onehandle, 15 or 16, can be so constructed that it can be affixed to abench, table, stand or similar furniture.

While the form of mechanism shown and described is admirably adapted tofulfill the objects primarily stated, it is to be understood that it isnot intended to confine the invention to the one form or embodimentherein disclosed, for it is susceptible of embodiment in various otherforms.

What is claimed is:

1. An article of manufacture, comprising a pair of arms pivoted togetherat one end, a bracket fixed to one arm, a second bracket pivotallymounted on the other arm, and a roller carried in each bracket, saidrollers movable into engagement with each other, when the handles aremoved toward each other, the engagement of the rollers being such as togrip material therebetween throughout the entire length of the rollers.

2. In an article of manufacture comprising a means to apply pressure tomaterial, the combination of a plierlike device having two arms pivotedtogether, and a roller mounted on each arm within the arms, one rollerbeing mounted to move relative to the arm on which it is pivoted toassure accurate contact between the rollers so as to apply the pressureto the material evenly throughout the lengths of the rollers.

80,268 Switzerland Feb. 14, 1919 Holman Mar. 4, 1941

